Home / 663,483,339.54-915,789,142.80-385,114,543.74

Finding the Fourth Proportional to 663,483,339.54, 915,789,142.80 and 385,114,543.74

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Solution

The fourth proportional to 663,483,339.54, 915,789,142.80 and 385,114,543.74 is: 531,563,788.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,483,339.54 : 915,789,142.80 = 385,114,543.74 : x
  2. Step 2: Convert to fraction form
    663,483,339.54/915,789,142.80 = 385,114,543.74/x
  3. Step 3: Cross multiply
    663,483,339.54x = 915,789,142.80 × 385,114,543.74
  4. Step 4: Simplify right side
    663,483,339.54x = 352,683,717,891,467,712
  5. Step 5: Solve for x
    x = 352,683,717,891,467,712/663,483,339.54
  6. Step 6: Final answer
    x = 531,563,788.98

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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.