Home / 579,312,897.20-868,969,345.80-515,823,412.40

Finding the Fourth Proportional to 579,312,897.20, 868,969,345.80 and 515,823,412.40

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Solution

The fourth proportional to 579,312,897.20, 868,969,345.80 and 515,823,412.40 is: 773,735,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,312,897.20 : 868,969,345.80 = 515,823,412.40 : x
  2. Step 2: Convert to fraction form
    579,312,897.20/868,969,345.80 = 515,823,412.40/x
  3. Step 3: Cross multiply
    579,312,897.20x = 868,969,345.80 × 515,823,412.40
  4. Step 4: Simplify right side
    579,312,897.20x = 448,234,733,221,551,552
  5. Step 5: Solve for x
    x = 448,234,733,221,551,552/579,312,897.20
  6. Step 6: Final answer
    x = 773,735,118.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.