Home / 278,081,428,643.40-417,122,142,965.10-68,702,177,699.40

Finding the Fourth Proportional to 278,081,428,643.40, 417,122,142,965.10 and 68,702,177,699.40

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Solution

The fourth proportional to 278,081,428,643.40, 417,122,142,965.10 and 68,702,177,699.40 is: 103,053,266,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,081,428,643.40 : 417,122,142,965.10 = 68,702,177,699.40 : x
  2. Step 2: Convert to fraction form
    278,081,428,643.40/417,122,142,965.10 = 68,702,177,699.40/x
  3. Step 3: Cross multiply
    278,081,428,643.40x = 417,122,142,965.10 × 68,702,177,699.40
  4. Step 4: Simplify right side
    278,081,428,643.40x = 28,657,199,588,342,832,824,320
  5. Step 5: Solve for x
    x = 28,657,199,588,342,832,824,320/278,081,428,643.40
  6. Step 6: Final answer
    x = 103,053,266,549.10

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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.