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Finding the Fourth Proportional to 520,531.35, 718,335.20 and 302,792.28

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Solution

The fourth proportional to 520,531.35, 718,335.20 and 302,792.28 is: 417,854.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,531.35 : 718,335.20 = 302,792.28 : x
  2. Step 2: Convert to fraction form
    520,531.35/718,335.20 = 302,792.28/x
  3. Step 3: Cross multiply
    520,531.35x = 718,335.20 × 302,792.28
  4. Step 4: Simplify right side
    520,531.35x = 217,506,353,012.26
  5. Step 5: Solve for x
    x = 217,506,353,012.26/520,531.35
  6. Step 6: Final answer
    x = 417,854.47

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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.