Home / 910,420.12-1,256,379.89-502,522.09

Finding the Fourth Proportional to 910,420.12, 1,256,379.89 and 502,522.09

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Solution

The fourth proportional to 910,420.12, 1,256,379.89 and 502,522.09 is: 693,480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,420.12 : 1,256,379.89 = 502,522.09 : x
  2. Step 2: Convert to fraction form
    910,420.12/1,256,379.89 = 502,522.09/x
  3. Step 3: Cross multiply
    910,420.12x = 1,256,379.89 × 502,522.09
  4. Step 4: Simplify right side
    910,420.12x = 631,358,648,156.77
  5. Step 5: Solve for x
    x = 631,358,648,156.77/910,420.12
  6. Step 6: Final answer
    x = 693,480.55

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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.