Home / 768,209,988.72-1,152,316,754.46-442,812,207.36

Finding the Fourth Proportional to 768,209,988.72, 1,152,316,754.46 and 442,812,207.36

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Solution

The fourth proportional to 768,209,988.72, 1,152,316,754.46 and 442,812,207.36 is: 664,219,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,209,988.72 : 1,152,316,754.46 = 442,812,207.36 : x
  2. Step 2: Convert to fraction form
    768,209,988.72/1,152,316,754.46 = 442,812,207.36/x
  3. Step 3: Cross multiply
    768,209,988.72x = 1,152,316,754.46 × 442,812,207.36
  4. Step 4: Simplify right side
    768,209,988.72x = 510,259,925,620,343,744
  5. Step 5: Solve for x
    x = 510,259,925,620,343,744/768,209,988.72
  6. Step 6: Final answer
    x = 664,219,332.10

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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.