Home / 917,001,090.80-1,265,456,115.20-499,312,376

Finding the Fourth Proportional to 917,001,090.80, 1,265,456,115.20 and 499,312,376

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Solution

The fourth proportional to 917,001,090.80, 1,265,456,115.20 and 499,312,376 is: 689,048,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,001,090.80 : 1,265,456,115.20 = 499,312,376 : x
  2. Step 2: Convert to fraction form
    917,001,090.80/1,265,456,115.20 = 499,312,376/x
  3. Step 3: Cross multiply
    917,001,090.80x = 1,265,456,115.20 × 499,312,376
  4. Step 4: Simplify right side
    917,001,090.80x = 631,857,899,604,241,792
  5. Step 5: Solve for x
    x = 631,857,899,604,241,792/917,001,090.80
  6. Step 6: Final answer
    x = 689,048,143.94

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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.