Home / 900,299,392.88-1,242,543,119.04-518,748,351.74

Finding the Fourth Proportional to 900,299,392.88, 1,242,543,119.04 and 518,748,351.74

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Solution

The fourth proportional to 900,299,392.88, 1,242,543,119.04 and 518,748,351.74 is: 715,947,605.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,299,392.88 : 1,242,543,119.04 = 518,748,351.74 : x
  2. Step 2: Convert to fraction form
    900,299,392.88/1,242,543,119.04 = 518,748,351.74/x
  3. Step 3: Cross multiply
    900,299,392.88x = 1,242,543,119.04 × 518,748,351.74
  4. Step 4: Simplify right side
    900,299,392.88x = 644,567,194,967,878,656
  5. Step 5: Solve for x
    x = 644,567,194,967,878,656/900,299,392.88
  6. Step 6: Final answer
    x = 715,947,605.95

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Double scale
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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.