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Finding the Fourth Proportional to 458,740.40, 686,728.20 and 403,444.40

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Solution

The fourth proportional to 458,740.40, 686,728.20 and 403,444.40 is: 603,950.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,740.40 : 686,728.20 = 403,444.40 : x
  2. Step 2: Convert to fraction form
    458,740.40/686,728.20 = 403,444.40/x
  3. Step 3: Cross multiply
    458,740.40x = 686,728.20 × 403,444.40
  4. Step 4: Simplify right side
    458,740.40x = 277,056,646,612.08
  5. Step 5: Solve for x
    x = 277,056,646,612.08/458,740.40
  6. Step 6: Final answer
    x = 603,950.83

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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.