Home / 917,001,092.80-1,265,456,117.96-499,312,378

Finding the Fourth Proportional to 917,001,092.80, 1,265,456,117.96 and 499,312,378

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Solution

The fourth proportional to 917,001,092.80, 1,265,456,117.96 and 499,312,378 is: 689,048,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,001,092.80 : 1,265,456,117.96 = 499,312,378 : x
  2. Step 2: Convert to fraction form
    917,001,092.80/1,265,456,117.96 = 499,312,378/x
  3. Step 3: Cross multiply
    917,001,092.80x = 1,265,456,117.96 × 499,312,378
  4. Step 4: Simplify right side
    917,001,092.80x = 631,857,903,513,256,064
  5. Step 5: Solve for x
    x = 631,857,903,513,256,064/917,001,092.80
  6. Step 6: Final answer
    x = 689,048,146.70

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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.