Home / 1,178,893,921.47-1,626,878,669.44-643,057,263.61

Finding the Fourth Proportional to 1,178,893,921.47, 1,626,878,669.44 and 643,057,263.61

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Solution

The fourth proportional to 1,178,893,921.47, 1,626,878,669.44 and 643,057,263.61 is: 887,421,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,893,921.47 : 1,626,878,669.44 = 643,057,263.61 : x
  2. Step 2: Convert to fraction form
    1,178,893,921.47/1,626,878,669.44 = 643,057,263.61/x
  3. Step 3: Cross multiply
    1,178,893,921.47x = 1,626,878,669.44 × 643,057,263.61
  4. Step 4: Simplify right side
    1,178,893,921.47x = 1,046,176,145,401,154,304
  5. Step 5: Solve for x
    x = 1,046,176,145,401,154,304/1,178,893,921.47
  6. Step 6: Final answer
    x = 887,421,782.70

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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.