Home / 687,492,461.98-948,762,514.02-386,130,881.04

Finding the Fourth Proportional to 687,492,461.98, 948,762,514.02 and 386,130,881.04

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Solution

The fourth proportional to 687,492,461.98, 948,762,514.02 and 386,130,881.04 is: 532,873,486.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,461.98 : 948,762,514.02 = 386,130,881.04 : x
  2. Step 2: Convert to fraction form
    687,492,461.98/948,762,514.02 = 386,130,881.04/x
  3. Step 3: Cross multiply
    687,492,461.98x = 948,762,514.02 × 386,130,881.04
  4. Step 4: Simplify right side
    687,492,461.98x = 366,346,505,436,267,968
  5. Step 5: Solve for x
    x = 366,346,505,436,267,968/687,492,461.98
  6. Step 6: Final answer
    x = 532,873,486.91

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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.