Home / 478,628,031.32-660,557,453.68-280,555,946.52

Finding the Fourth Proportional to 478,628,031.32, 660,557,453.68 and 280,555,946.52

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Solution

The fourth proportional to 478,628,031.32, 660,557,453.68 and 280,555,946.52 is: 387,196,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,628,031.32 : 660,557,453.68 = 280,555,946.52 : x
  2. Step 2: Convert to fraction form
    478,628,031.32/660,557,453.68 = 280,555,946.52/x
  3. Step 3: Cross multiply
    478,628,031.32x = 660,557,453.68 × 280,555,946.52
  4. Step 4: Simplify right side
    478,628,031.32x = 185,323,321,648,033,440
  5. Step 5: Solve for x
    x = 185,323,321,648,033,440/478,628,031.32
  6. Step 6: Final answer
    x = 387,196,966.16

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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.