Home / 1,222,208,254.48-1,686,688,131.74-686,454,332.52

Finding the Fourth Proportional to 1,222,208,254.48, 1,686,688,131.74 and 686,454,332.52

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Solution

The fourth proportional to 1,222,208,254.48, 1,686,688,131.74 and 686,454,332.52 is: 947,329,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,208,254.48 : 1,686,688,131.74 = 686,454,332.52 : x
  2. Step 2: Convert to fraction form
    1,222,208,254.48/1,686,688,131.74 = 686,454,332.52/x
  3. Step 3: Cross multiply
    1,222,208,254.48x = 1,686,688,131.74 × 686,454,332.52
  4. Step 4: Simplify right side
    1,222,208,254.48x = 1,157,834,375,642,987,520
  5. Step 5: Solve for x
    x = 1,157,834,375,642,987,520/1,222,208,254.48
  6. Step 6: Final answer
    x = 947,329,860.85

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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.