Home / 1,220,009,614.68-1,683,630,318.78-663,092,494.68

Finding the Fourth Proportional to 1,220,009,614.68, 1,683,630,318.78 and 663,092,494.68

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Solution

The fourth proportional to 1,220,009,614.68, 1,683,630,318.78 and 663,092,494.68 is: 915,076,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,009,614.68 : 1,683,630,318.78 = 663,092,494.68 : x
  2. Step 2: Convert to fraction form
    1,220,009,614.68/1,683,630,318.78 = 663,092,494.68/x
  3. Step 3: Cross multiply
    1,220,009,614.68x = 1,683,630,318.78 × 663,092,494.68
  4. Step 4: Simplify right side
    1,220,009,614.68x = 1,116,402,628,198,713,728
  5. Step 5: Solve for x
    x = 1,116,402,628,198,713,728/1,220,009,614.68
  6. Step 6: Final answer
    x = 915,076,909.86

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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.