Home / 642,676,043.96-886,830,968.76-360,429,943.16

Finding the Fourth Proportional to 642,676,043.96, 886,830,968.76 and 360,429,943.16

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Solution

The fourth proportional to 642,676,043.96, 886,830,968.76 and 360,429,943.16 is: 497,358,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,676,043.96 : 886,830,968.76 = 360,429,943.16 : x
  2. Step 2: Convert to fraction form
    642,676,043.96/886,830,968.76 = 360,429,943.16/x
  3. Step 3: Cross multiply
    642,676,043.96x = 886,830,968.76 × 360,429,943.16
  4. Step 4: Simplify right side
    642,676,043.96x = 319,640,435,662,694,528
  5. Step 5: Solve for x
    x = 319,640,435,662,694,528/642,676,043.96
  6. Step 6: Final answer
    x = 497,358,566.06

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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.