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Finding the Fourth Proportional to 626,752,634.40, 878,360,680.80 and 626,752,634.40

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Solution

The fourth proportional to 626,752,634.40, 878,360,680.80 and 626,752,634.40 is: 878,360,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,752,634.40 : 878,360,680.80 = 626,752,634.40 : x
  2. Step 2: Convert to fraction form
    626,752,634.40/878,360,680.80 = 626,752,634.40/x
  3. Step 3: Cross multiply
    626,752,634.40x = 878,360,680.80 × 626,752,634.40
  4. Step 4: Simplify right side
    626,752,634.40x = 550,514,870,644,777,472
  5. Step 5: Solve for x
    x = 550,514,870,644,777,472/626,752,634.40
  6. Step 6: Final answer
    x = 878,360,680.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.