Home / 970,128,473.32-1,455,199,008.54-387,911,631.88

Finding the Fourth Proportional to 970,128,473.32, 1,455,199,008.54 and 387,911,631.88

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Solution

The fourth proportional to 970,128,473.32, 1,455,199,008.54 and 387,911,631.88 is: 581,869,966.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,128,473.32 : 1,455,199,008.54 = 387,911,631.88 : x
  2. Step 2: Convert to fraction form
    970,128,473.32/1,455,199,008.54 = 387,911,631.88/x
  3. Step 3: Cross multiply
    970,128,473.32x = 1,455,199,008.54 × 387,911,631.88
  4. Step 4: Simplify right side
    970,128,473.32x = 564,488,622,112,909,440
  5. Step 5: Solve for x
    x = 564,488,622,112,909,440/970,128,473.32
  6. Step 6: Final answer
    x = 581,869,966.34

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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.