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Finding the Fourth Proportional to 520,059.10, 778,533.45 and 489,300.70

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Solution

The fourth proportional to 520,059.10, 778,533.45 and 489,300.70 is: 732,487.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,059.10 : 778,533.45 = 489,300.70 : x
  2. Step 2: Convert to fraction form
    520,059.10/778,533.45 = 489,300.70/x
  3. Step 3: Cross multiply
    520,059.10x = 778,533.45 × 489,300.70
  4. Step 4: Simplify right side
    520,059.10x = 380,936,962,058.42
  5. Step 5: Solve for x
    x = 380,936,962,058.42/520,059.10
  6. Step 6: Final answer
    x = 732,487.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.