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Finding the Fourth Proportional to 520,875.34, 785,217.06 and 486,155.23

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Solution

The fourth proportional to 520,875.34, 785,217.06 and 486,155.23 is: 732,876.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,875.34 : 785,217.06 = 486,155.23 : x
  2. Step 2: Convert to fraction form
    520,875.34/785,217.06 = 486,155.23/x
  3. Step 3: Cross multiply
    520,875.34x = 785,217.06 × 486,155.23
  4. Step 4: Simplify right side
    520,875.34x = 381,737,378,441.18
  5. Step 5: Solve for x
    x = 381,737,378,441.18/520,875.34
  6. Step 6: Final answer
    x = 732,876.66

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.