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Finding the Fourth Proportional to 549,648.57, 758,505.78 and 307,930.35

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Solution

The fourth proportional to 549,648.57, 758,505.78 and 307,930.35 is: 424,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,648.57 : 758,505.78 = 307,930.35 : x
  2. Step 2: Convert to fraction form
    549,648.57/758,505.78 = 307,930.35/x
  3. Step 3: Cross multiply
    549,648.57x = 758,505.78 × 307,930.35
  4. Step 4: Simplify right side
    549,648.57x = 233,566,950,312.42
  5. Step 5: Solve for x
    x = 233,566,950,312.42/549,648.57
  6. Step 6: Final answer
    x = 424,938.70

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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.