Home / 781,813,308.60-1,172,864,129.94-257,211,948.60

Finding the Fourth Proportional to 781,813,308.60, 1,172,864,129.94 and 257,211,948.60

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Solution

The fourth proportional to 781,813,308.60, 1,172,864,129.94 and 257,211,948.60 is: 385,865,353.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,813,308.60 : 1,172,864,129.94 = 257,211,948.60 : x
  2. Step 2: Convert to fraction form
    781,813,308.60/1,172,864,129.94 = 257,211,948.60/x
  3. Step 3: Cross multiply
    781,813,308.60x = 1,172,864,129.94 × 257,211,948.60
  4. Step 4: Simplify right side
    781,813,308.60x = 301,674,668,304,911,040
  5. Step 5: Solve for x
    x = 301,674,668,304,911,040/781,813,308.60
  6. Step 6: Final answer
    x = 385,865,353.00

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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.