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Finding the Fourth Proportional to 643,522.16, 888,060.71 and 357,041.55

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Solution

The fourth proportional to 643,522.16, 888,060.71 and 357,041.55 is: 492,717.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,522.16 : 888,060.71 = 357,041.55 : x
  2. Step 2: Convert to fraction form
    643,522.16/888,060.71 = 357,041.55/x
  3. Step 3: Cross multiply
    643,522.16x = 888,060.71 × 357,041.55
  4. Step 4: Simplify right side
    643,522.16x = 317,074,570,607.29
  5. Step 5: Solve for x
    x = 317,074,570,607.29/643,522.16
  6. Step 6: Final answer
    x = 492,717.41

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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.