Home / 970,128,472.32-1,455,199,007.04-387,911,630.88

Finding the Fourth Proportional to 970,128,472.32, 1,455,199,007.04 and 387,911,630.88

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Solution

The fourth proportional to 970,128,472.32, 1,455,199,007.04 and 387,911,630.88 is: 581,869,964.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,128,472.32 : 1,455,199,007.04 = 387,911,630.88 : x
  2. Step 2: Convert to fraction form
    970,128,472.32/1,455,199,007.04 = 387,911,630.88/x
  3. Step 3: Cross multiply
    970,128,472.32x = 1,455,199,007.04 × 387,911,630.88
  4. Step 4: Simplify right side
    970,128,472.32x = 564,488,620,075,843,008
  5. Step 5: Solve for x
    x = 564,488,620,075,843,008/970,128,472.32
  6. Step 6: Final answer
    x = 581,869,964.84

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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.