Home / 912,321,130.77-1,259,029,719.99-515,835,607.77

Finding the Fourth Proportional to 912,321,130.77, 1,259,029,719.99 and 515,835,607.77

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Solution

The fourth proportional to 912,321,130.77, 1,259,029,719.99 and 515,835,607.77 is: 711,868,155.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,321,130.77 : 1,259,029,719.99 = 515,835,607.77 : x
  2. Step 2: Convert to fraction form
    912,321,130.77/1,259,029,719.99 = 515,835,607.77/x
  3. Step 3: Cross multiply
    912,321,130.77x = 1,259,029,719.99 × 515,835,607.77
  4. Step 4: Simplify right side
    912,321,130.77x = 649,452,360,811,534,592
  5. Step 5: Solve for x
    x = 649,452,360,811,534,592/912,321,130.77
  6. Step 6: Final answer
    x = 711,868,155.75

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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.