Home / 510,034,663.80-765,051,995.70-407,997,991.80

Finding the Fourth Proportional to 510,034,663.80, 765,051,995.70 and 407,997,991.80

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Solution

The fourth proportional to 510,034,663.80, 765,051,995.70 and 407,997,991.80 is: 611,996,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,034,663.80 : 765,051,995.70 = 407,997,991.80 : x
  2. Step 2: Convert to fraction form
    510,034,663.80/765,051,995.70 = 407,997,991.80/x
  3. Step 3: Cross multiply
    510,034,663.80x = 765,051,995.70 × 407,997,991.80
  4. Step 4: Simplify right side
    510,034,663.80x = 312,139,677,868,182,272
  5. Step 5: Solve for x
    x = 312,139,677,868,182,272/510,034,663.80
  6. Step 6: Final answer
    x = 611,996,987.70

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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.