Home / 749,088,002.40-1,123,632,003.60-386,290,946.40

Finding the Fourth Proportional to 749,088,002.40, 1,123,632,003.60 and 386,290,946.40

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Solution

The fourth proportional to 749,088,002.40, 1,123,632,003.60 and 386,290,946.40 is: 579,436,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,088,002.40 : 1,123,632,003.60 = 386,290,946.40 : x
  2. Step 2: Convert to fraction form
    749,088,002.40/1,123,632,003.60 = 386,290,946.40/x
  3. Step 3: Cross multiply
    749,088,002.40x = 1,123,632,003.60 × 386,290,946.40
  4. Step 4: Simplify right side
    749,088,002.40x = 434,048,870,075,972,160
  5. Step 5: Solve for x
    x = 434,048,870,075,972,160/749,088,002.40
  6. Step 6: Final answer
    x = 579,436,419.60

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Double scale
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Similar ratio
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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.