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Finding the Fourth Proportional to 520,009.20, 717,946.20 and 424,744.56

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Solution

The fourth proportional to 520,009.20, 717,946.20 and 424,744.56 is: 586,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,009.20 : 717,946.20 = 424,744.56 : x
  2. Step 2: Convert to fraction form
    520,009.20/717,946.20 = 424,744.56/x
  3. Step 3: Cross multiply
    520,009.20x = 717,946.20 × 424,744.56
  4. Step 4: Simplify right side
    520,009.20x = 304,943,742,822.67
  5. Step 5: Solve for x
    x = 304,943,742,822.67/520,009.20
  6. Step 6: Final answer
    x = 586,419.90

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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.