Home / 892,107,967.47-1,231,036,818.30-515,788,699.65

Finding the Fourth Proportional to 892,107,967.47, 1,231,036,818.30 and 515,788,699.65

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Solution

The fourth proportional to 892,107,967.47, 1,231,036,818.30 and 515,788,699.65 is: 711,746,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,107,967.47 : 1,231,036,818.30 = 515,788,699.65 : x
  2. Step 2: Convert to fraction form
    892,107,967.47/1,231,036,818.30 = 515,788,699.65/x
  3. Step 3: Cross multiply
    892,107,967.47x = 1,231,036,818.30 × 515,788,699.65
  4. Step 4: Simplify right side
    892,107,967.47x = 634,954,879,732,230,272
  5. Step 5: Solve for x
    x = 634,954,879,732,230,272/892,107,967.47
  6. Step 6: Final answer
    x = 711,746,675.16

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Double scale
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1.5x scale

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.