Home / 478,621,707.14-660,548,735.39-280,549,619.12

Finding the Fourth Proportional to 478,621,707.14, 660,548,735.39 and 280,549,619.12

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Solution

The fourth proportional to 478,621,707.14, 660,548,735.39 and 280,549,619.12 is: 387,188,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,621,707.14 : 660,548,735.39 = 280,549,619.12 : x
  2. Step 2: Convert to fraction form
    478,621,707.14/660,548,735.39 = 280,549,619.12/x
  3. Step 3: Cross multiply
    478,621,707.14x = 660,548,735.39 × 280,549,619.12
  4. Step 4: Simplify right side
    478,621,707.14x = 185,316,696,123,862,176
  5. Step 5: Solve for x
    x = 185,316,696,123,862,176/478,621,707.14
  6. Step 6: Final answer
    x = 387,188,239.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.