Home / 900,828,001.20-1,351,242,001.80-554,659,143.60

Finding the Fourth Proportional to 900,828,001.20, 1,351,242,001.80 and 554,659,143.60

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Solution

The fourth proportional to 900,828,001.20, 1,351,242,001.80 and 554,659,143.60 is: 831,988,715.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,828,001.20 : 1,351,242,001.80 = 554,659,143.60 : x
  2. Step 2: Convert to fraction form
    900,828,001.20/1,351,242,001.80 = 554,659,143.60/x
  3. Step 3: Cross multiply
    900,828,001.20x = 1,351,242,001.80 × 554,659,143.60
  4. Step 4: Simplify right side
    900,828,001.20x = 749,478,731,514,737,664
  5. Step 5: Solve for x
    x = 749,478,731,514,737,664/900,828,001.20
  6. Step 6: Final answer
    x = 831,988,715.40

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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.