Home / 917,001,095.80-1,265,456,122.10-499,312,381

Finding the Fourth Proportional to 917,001,095.80, 1,265,456,122.10 and 499,312,381

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Solution

The fourth proportional to 917,001,095.80, 1,265,456,122.10 and 499,312,381 is: 689,048,150.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,001,095.80 : 1,265,456,122.10 = 499,312,381 : x
  2. Step 2: Convert to fraction form
    917,001,095.80/1,265,456,122.10 = 499,312,381/x
  3. Step 3: Cross multiply
    917,001,095.80x = 1,265,456,122.10 × 499,312,381
  4. Step 4: Simplify right side
    917,001,095.80x = 631,857,909,376,777,728
  5. Step 5: Solve for x
    x = 631,857,909,376,777,728/917,001,095.80
  6. Step 6: Final answer
    x = 689,048,150.84

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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.