Home / 642,343,641.87-886,434,225.75-363,885,165.39

Finding the Fourth Proportional to 642,343,641.87, 886,434,225.75 and 363,885,165.39

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Solution

The fourth proportional to 642,343,641.87, 886,434,225.75 and 363,885,165.39 is: 502,161,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,343,641.87 : 886,434,225.75 = 363,885,165.39 : x
  2. Step 2: Convert to fraction form
    642,343,641.87/886,434,225.75 = 363,885,165.39/x
  3. Step 3: Cross multiply
    642,343,641.87x = 886,434,225.75 × 363,885,165.39
  4. Step 4: Simplify right side
    642,343,641.87x = 322,560,264,844,395,328
  5. Step 5: Solve for x
    x = 322,560,264,844,395,328/642,343,641.87
  6. Step 6: Final answer
    x = 502,161,528.22

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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.