Home / 805,787,999.10-1,208,681,998.65-560,899,986.30

Finding the Fourth Proportional to 805,787,999.10, 1,208,681,998.65 and 560,899,986.30

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Solution

The fourth proportional to 805,787,999.10, 1,208,681,998.65 and 560,899,986.30 is: 841,349,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,787,999.10 : 1,208,681,998.65 = 560,899,986.30 : x
  2. Step 2: Convert to fraction form
    805,787,999.10/1,208,681,998.65 = 560,899,986.30/x
  3. Step 3: Cross multiply
    805,787,999.10x = 1,208,681,998.65 × 560,899,986.30
  4. Step 4: Simplify right side
    805,787,999.10x = 677,949,716,483,841,664
  5. Step 5: Solve for x
    x = 677,949,716,483,841,664/805,787,999.10
  6. Step 6: Final answer
    x = 841,349,979.45

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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.