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Finding the Fourth Proportional to 549,412.74, 758,153.46 and 307,639.89

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Solution

The fourth proportional to 549,412.74, 758,153.46 and 307,639.89 is: 424,522.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,412.74 : 758,153.46 = 307,639.89 : x
  2. Step 2: Convert to fraction form
    549,412.74/758,153.46 = 307,639.89/x
  3. Step 3: Cross multiply
    549,412.74x = 758,153.46 × 307,639.89
  4. Step 4: Simplify right side
    549,412.74x = 233,238,247,037.52
  5. Step 5: Solve for x
    x = 233,238,247,037.52/549,412.74
  6. Step 6: Final answer
    x = 424,522.82

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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.