Home / 1,020,931.47-1,531,397.39-421,233.75

Finding the Fourth Proportional to 1,020,931.47, 1,531,397.39 and 421,233.75

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Solution

The fourth proportional to 1,020,931.47, 1,531,397.39 and 421,233.75 is: 631,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,931.47 : 1,531,397.39 = 421,233.75 : x
  2. Step 2: Convert to fraction form
    1,020,931.47/1,531,397.39 = 421,233.75/x
  3. Step 3: Cross multiply
    1,020,931.47x = 1,531,397.39 × 421,233.75
  4. Step 4: Simplify right side
    1,020,931.47x = 645,076,263,223.74
  5. Step 5: Solve for x
    x = 645,076,263,223.74/1,020,931.47
  6. Step 6: Final answer
    x = 631,850.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.