Home / 745,142.04-1,028,318.70-527,740.20

Finding the Fourth Proportional to 745,142.04, 1,028,318.70 and 527,740.20

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Solution

The fourth proportional to 745,142.04, 1,028,318.70 and 527,740.20 is: 728,297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,142.04 : 1,028,318.70 = 527,740.20 : x
  2. Step 2: Convert to fraction form
    745,142.04/1,028,318.70 = 527,740.20/x
  3. Step 3: Cross multiply
    745,142.04x = 1,028,318.70 × 527,740.20
  4. Step 4: Simplify right side
    745,142.04x = 542,685,116,401.74
  5. Step 5: Solve for x
    x = 542,685,116,401.74/745,142.04
  6. Step 6: Final answer
    x = 728,297.54

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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.