Home / 426,602,897.10-640,382,642.55-329,986,923.30

Finding the Fourth Proportional to 426,602,897.10, 640,382,642.55 and 329,986,923.30

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Solution

The fourth proportional to 426,602,897.10, 640,382,642.55 and 329,986,923.30 is: 495,350,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,602,897.10 : 640,382,642.55 = 329,986,923.30 : x
  2. Step 2: Convert to fraction form
    426,602,897.10/640,382,642.55 = 329,986,923.30/x
  3. Step 3: Cross multiply
    426,602,897.10x = 640,382,642.55 × 329,986,923.30
  4. Step 4: Simplify right side
    426,602,897.10x = 211,317,897,949,798,144
  5. Step 5: Solve for x
    x = 211,317,897,949,798,144/426,602,897.10
  6. Step 6: Final answer
    x = 495,350,358.35

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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.