Home / 1,222,208,807.52-1,686,688,894.80-686,454,885.84

Finding the Fourth Proportional to 1,222,208,807.52, 1,686,688,894.80 and 686,454,885.84

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Solution

The fourth proportional to 1,222,208,807.52, 1,686,688,894.80 and 686,454,885.84 is: 947,330,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,208,807.52 : 1,686,688,894.80 = 686,454,885.84 : x
  2. Step 2: Convert to fraction form
    1,222,208,807.52/1,686,688,894.80 = 686,454,885.84/x
  3. Step 3: Cross multiply
    1,222,208,807.52x = 1,686,688,894.80 × 686,454,885.84
  4. Step 4: Simplify right side
    1,222,208,807.52x = 1,157,835,832,727,529,728
  5. Step 5: Solve for x
    x = 1,157,835,832,727,529,728/1,222,208,807.52
  6. Step 6: Final answer
    x = 947,330,624.36

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.