Home / 977,949,157.86-1,349,447,344.90-661,098,805.72

Finding the Fourth Proportional to 977,949,157.86, 1,349,447,344.90 and 661,098,805.72

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Solution

The fourth proportional to 977,949,157.86, 1,349,447,344.90 and 661,098,805.72 is: 912,233,546.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,949,157.86 : 1,349,447,344.90 = 661,098,805.72 : x
  2. Step 2: Convert to fraction form
    977,949,157.86/1,349,447,344.90 = 661,098,805.72/x
  3. Step 3: Cross multiply
    977,949,157.86x = 1,349,447,344.90 × 661,098,805.72
  4. Step 4: Simplify right side
    977,949,157.86x = 892,118,028,090,388,608
  5. Step 5: Solve for x
    x = 892,118,028,090,388,608/977,949,157.86
  6. Step 6: Final answer
    x = 912,233,546.01

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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.