Home / 870,941,014.40-1,306,411,521.60-353,619,286.40

Finding the Fourth Proportional to 870,941,014.40, 1,306,411,521.60 and 353,619,286.40

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Solution

The fourth proportional to 870,941,014.40, 1,306,411,521.60 and 353,619,286.40 is: 530,428,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,941,014.40 : 1,306,411,521.60 = 353,619,286.40 : x
  2. Step 2: Convert to fraction form
    870,941,014.40/1,306,411,521.60 = 353,619,286.40/x
  3. Step 3: Cross multiply
    870,941,014.40x = 1,306,411,521.60 × 353,619,286.40
  4. Step 4: Simplify right side
    870,941,014.40x = 461,972,310,012,930,112
  5. Step 5: Solve for x
    x = 461,972,310,012,930,112/870,941,014.40
  6. Step 6: Final answer
    x = 530,428,929.60

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1.5x scale

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.