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Finding the Fourth Proportional to 709,773.45, 979,482.38 and 387,483.57

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Solution

The fourth proportional to 709,773.45, 979,482.38 and 387,483.57 is: 534,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,773.45 : 979,482.38 = 387,483.57 : x
  2. Step 2: Convert to fraction form
    709,773.45/979,482.38 = 387,483.57/x
  3. Step 3: Cross multiply
    709,773.45x = 979,482.38 × 387,483.57
  4. Step 4: Simplify right side
    709,773.45x = 379,533,327,417.08
  5. Step 5: Solve for x
    x = 379,533,327,417.08/709,773.45
  6. Step 6: Final answer
    x = 534,724.60

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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.