Home / 520,929,001.76-780,799,118.84-209,837,556.72

Finding the Fourth Proportional to 520,929,001.76, 780,799,118.84 and 209,837,556.72

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Solution

The fourth proportional to 520,929,001.76, 780,799,118.84 and 209,837,556.72 is: 314,516,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,929,001.76 : 780,799,118.84 = 209,837,556.72 : x
  2. Step 2: Convert to fraction form
    520,929,001.76/780,799,118.84 = 209,837,556.72/x
  3. Step 3: Cross multiply
    520,929,001.76x = 780,799,118.84 × 209,837,556.72
  4. Step 4: Simplify right side
    520,929,001.76x = 163,840,979,386,514,528
  5. Step 5: Solve for x
    x = 163,840,979,386,514,528/520,929,001.76
  6. Step 6: Final answer
    x = 314,516,908.89

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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.