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Finding the Fourth Proportional to 578,729.76, 798,923.96 and 385,459.10

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Solution

The fourth proportional to 578,729.76, 798,923.96 and 385,459.10 is: 532,117.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,729.76 : 798,923.96 = 385,459.10 : x
  2. Step 2: Convert to fraction form
    578,729.76/798,923.96 = 385,459.10/x
  3. Step 3: Cross multiply
    578,729.76x = 798,923.96 × 385,459.10
  4. Step 4: Simplify right side
    578,729.76x = 307,952,510,590.04
  5. Step 5: Solve for x
    x = 307,952,510,590.04/578,729.76
  6. Step 6: Final answer
    x = 532,117.98

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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.