Home / 660,323,675.40-990,485,513.10-650,120,008.20

Finding the Fourth Proportional to 660,323,675.40, 990,485,513.10 and 650,120,008.20

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Solution

The fourth proportional to 660,323,675.40, 990,485,513.10 and 650,120,008.20 is: 975,180,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,323,675.40 : 990,485,513.10 = 650,120,008.20 : x
  2. Step 2: Convert to fraction form
    660,323,675.40/990,485,513.10 = 650,120,008.20/x
  3. Step 3: Cross multiply
    660,323,675.40x = 990,485,513.10 × 650,120,008.20
  4. Step 4: Simplify right side
    660,323,675.40x = 643,934,449,898,553,216
  5. Step 5: Solve for x
    x = 643,934,449,898,553,216/660,323,675.40
  6. Step 6: Final answer
    x = 975,180,012.30

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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.