Home / 916,639.50-1,264,943.48-508,717.64

Finding the Fourth Proportional to 916,639.50, 1,264,943.48 and 508,717.64

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Solution

The fourth proportional to 916,639.50, 1,264,943.48 and 508,717.64 is: 702,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,639.50 : 1,264,943.48 = 508,717.64 : x
  2. Step 2: Convert to fraction form
    916,639.50/1,264,943.48 = 508,717.64/x
  3. Step 3: Cross multiply
    916,639.50x = 1,264,943.48 × 508,717.64
  4. Step 4: Simplify right side
    916,639.50x = 643,499,061,878.99
  5. Step 5: Solve for x
    x = 643,499,061,878.99/916,639.50
  6. Step 6: Final answer
    x = 702,019.78

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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.