Home / 747,801.34-1,119,913.80-431,298.70

Finding the Fourth Proportional to 747,801.34, 1,119,913.80 and 431,298.70

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Solution

The fourth proportional to 747,801.34, 1,119,913.80 and 431,298.70 is: 645,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,801.34 : 1,119,913.80 = 431,298.70 : x
  2. Step 2: Convert to fraction form
    747,801.34/1,119,913.80 = 431,298.70/x
  3. Step 3: Cross multiply
    747,801.34x = 1,119,913.80 × 431,298.70
  4. Step 4: Simplify right side
    747,801.34x = 483,017,366,052.06
  5. Step 5: Solve for x
    x = 483,017,366,052.06/747,801.34
  6. Step 6: Final answer
    x = 645,916.69

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1.5x scale

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.