Home / 990,862,449.90-1,485,311,925.82-465,290,726.76

Finding the Fourth Proportional to 990,862,449.90, 1,485,311,925.82 and 465,290,726.76

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Solution

The fourth proportional to 990,862,449.90, 1,485,311,925.82 and 465,290,726.76 is: 697,475,078.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,862,449.90 : 1,485,311,925.82 = 465,290,726.76 : x
  2. Step 2: Convert to fraction form
    990,862,449.90/1,485,311,925.82 = 465,290,726.76/x
  3. Step 3: Cross multiply
    990,862,449.90x = 1,485,311,925.82 × 465,290,726.76
  4. Step 4: Simplify right side
    990,862,449.90x = 691,101,865,429,803,904
  5. Step 5: Solve for x
    x = 691,101,865,429,803,904/990,862,449.90
  6. Step 6: Final answer
    x = 697,475,078.91

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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.