Home / 641,948.72-885,878.40-355,462.65

Finding the Fourth Proportional to 641,948.72, 885,878.40 and 355,462.65

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Solution

The fourth proportional to 641,948.72, 885,878.40 and 355,462.65 is: 490,532.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,948.72 : 885,878.40 = 355,462.65 : x
  2. Step 2: Convert to fraction form
    641,948.72/885,878.40 = 355,462.65/x
  3. Step 3: Cross multiply
    641,948.72x = 885,878.40 × 355,462.65
  4. Step 4: Simplify right side
    641,948.72x = 314,896,683,641.76
  5. Step 5: Solve for x
    x = 314,896,683,641.76/641,948.72
  6. Step 6: Final answer
    x = 490,532.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.