Home / 418,565.12-623,904.66-384,972.80

Finding the Fourth Proportional to 418,565.12, 623,904.66 and 384,972.80

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Solution

The fourth proportional to 418,565.12, 623,904.66 and 384,972.80 is: 573,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,565.12 : 623,904.66 = 384,972.80 : x
  2. Step 2: Convert to fraction form
    418,565.12/623,904.66 = 384,972.80/x
  3. Step 3: Cross multiply
    418,565.12x = 623,904.66 × 384,972.80
  4. Step 4: Simplify right side
    418,565.12x = 240,186,323,893.25
  5. Step 5: Solve for x
    x = 240,186,323,893.25/418,565.12
  6. Step 6: Final answer
    x = 573,832.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.