Home / 485,277,218.40-727,915,827.60-213,179,426.40

Finding the Fourth Proportional to 485,277,218.40, 727,915,827.60 and 213,179,426.40

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Solution

The fourth proportional to 485,277,218.40, 727,915,827.60 and 213,179,426.40 is: 319,769,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,277,218.40 : 727,915,827.60 = 213,179,426.40 : x
  2. Step 2: Convert to fraction form
    485,277,218.40/727,915,827.60 = 213,179,426.40/x
  3. Step 3: Cross multiply
    485,277,218.40x = 727,915,827.60 × 213,179,426.40
  4. Step 4: Simplify right side
    485,277,218.40x = 155,176,678,595,249,312
  5. Step 5: Solve for x
    x = 155,176,678,595,249,312/485,277,218.40
  6. Step 6: Final answer
    x = 319,769,139.60

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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.