Home / 485,053,172.40-727,686,046.80-239,527,430.40

Finding the Fourth Proportional to 485,053,172.40, 727,686,046.80 and 239,527,430.40

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Solution

The fourth proportional to 485,053,172.40, 727,686,046.80 and 239,527,430.40 is: 359,343,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,053,172.40 : 727,686,046.80 = 239,527,430.40 : x
  2. Step 2: Convert to fraction form
    485,053,172.40/727,686,046.80 = 239,527,430.40/x
  3. Step 3: Cross multiply
    485,053,172.40x = 727,686,046.80 × 239,527,430.40
  4. Step 4: Simplify right side
    485,053,172.40x = 174,300,768,927,938,144
  5. Step 5: Solve for x
    x = 174,300,768,927,938,144/485,053,172.40
  6. Step 6: Final answer
    x = 359,343,632.50

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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.