Home / 712,575,813.20-1,068,863,719.80-440,478,021.20

Finding the Fourth Proportional to 712,575,813.20, 1,068,863,719.80 and 440,478,021.20

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Solution

The fourth proportional to 712,575,813.20, 1,068,863,719.80 and 440,478,021.20 is: 660,717,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,575,813.20 : 1,068,863,719.80 = 440,478,021.20 : x
  2. Step 2: Convert to fraction form
    712,575,813.20/1,068,863,719.80 = 440,478,021.20/x
  3. Step 3: Cross multiply
    712,575,813.20x = 1,068,863,719.80 × 440,478,021.20
  4. Step 4: Simplify right side
    712,575,813.20x = 470,810,976,229,975,232
  5. Step 5: Solve for x
    x = 470,810,976,229,975,232/712,575,813.20
  6. Step 6: Final answer
    x = 660,717,031.80

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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.