Home / 426,979,851.17-640,549,952.10-193,826,927.57

Finding the Fourth Proportional to 426,979,851.17, 640,549,952.10 and 193,826,927.57

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Solution

The fourth proportional to 426,979,851.17, 640,549,952.10 and 193,826,927.57 is: 290,776,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,979,851.17 : 640,549,952.10 = 193,826,927.57 : x
  2. Step 2: Convert to fraction form
    426,979,851.17/640,549,952.10 = 193,826,927.57/x
  3. Step 3: Cross multiply
    426,979,851.17x = 640,549,952.10 × 193,826,927.57
  4. Step 4: Simplify right side
    426,979,851.17x = 124,155,829,167,450,928
  5. Step 5: Solve for x
    x = 124,155,829,167,450,928/426,979,851.17
  6. Step 6: Final answer
    x = 290,776,786.84

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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.