Home / 724,673.40-1,000,030.05-402,375.21

Finding the Fourth Proportional to 724,673.40, 1,000,030.05 and 402,375.21

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Solution

The fourth proportional to 724,673.40, 1,000,030.05 and 402,375.21 is: 555,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,673.40 : 1,000,030.05 = 402,375.21 : x
  2. Step 2: Convert to fraction form
    724,673.40/1,000,030.05 = 402,375.21/x
  3. Step 3: Cross multiply
    724,673.40x = 1,000,030.05 × 402,375.21
  4. Step 4: Simplify right side
    724,673.40x = 402,387,301,375.06
  5. Step 5: Solve for x
    x = 402,387,301,375.06/724,673.40
  6. Step 6: Final answer
    x = 555,267.11

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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.