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Finding the Fourth Proportional to 659,787.40, 910,510.50 and 357,981.16

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Solution

The fourth proportional to 659,787.40, 910,510.50 and 357,981.16 is: 494,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,787.40 : 910,510.50 = 357,981.16 : x
  2. Step 2: Convert to fraction form
    659,787.40/910,510.50 = 357,981.16/x
  3. Step 3: Cross multiply
    659,787.40x = 910,510.50 × 357,981.16
  4. Step 4: Simplify right side
    659,787.40x = 325,945,604,982.18
  5. Step 5: Solve for x
    x = 325,945,604,982.18/659,787.40
  6. Step 6: Final answer
    x = 494,016.11

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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.