Home / 768,007.80-1,152,011.70-487,841.40

Finding the Fourth Proportional to 768,007.80, 1,152,011.70 and 487,841.40

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Solution

The fourth proportional to 768,007.80, 1,152,011.70 and 487,841.40 is: 731,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,007.80 : 1,152,011.70 = 487,841.40 : x
  2. Step 2: Convert to fraction form
    768,007.80/1,152,011.70 = 487,841.40/x
  3. Step 3: Cross multiply
    768,007.80x = 1,152,011.70 × 487,841.40
  4. Step 4: Simplify right side
    768,007.80x = 561,999,000,544.38
  5. Step 5: Solve for x
    x = 561,999,000,544.38/768,007.80
  6. Step 6: Final answer
    x = 731,762.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.