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Finding the Fourth Proportional to 704,693.70, 972,479.85 and 382,403.78

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Solution

The fourth proportional to 704,693.70, 972,479.85 and 382,403.78 is: 527,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,693.70 : 972,479.85 = 382,403.78 : x
  2. Step 2: Convert to fraction form
    704,693.70/972,479.85 = 382,403.78/x
  3. Step 3: Cross multiply
    704,693.70x = 972,479.85 × 382,403.78
  4. Step 4: Simplify right side
    704,693.70x = 371,879,974,509.93
  5. Step 5: Solve for x
    x = 371,879,974,509.93/704,693.70
  6. Step 6: Final answer
    x = 527,718.60

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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.