Home / 916,590.70-1,264,908.81-508,718.83

Finding the Fourth Proportional to 916,590.70, 1,264,908.81 and 508,718.83

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Solution

The fourth proportional to 916,590.70, 1,264,908.81 and 508,718.83 is: 702,039.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,590.70 : 1,264,908.81 = 508,718.83 : x
  2. Step 2: Convert to fraction form
    916,590.70/1,264,908.81 = 508,718.83/x
  3. Step 3: Cross multiply
    916,590.70x = 1,264,908.81 × 508,718.83
  4. Step 4: Simplify right side
    916,590.70x = 643,482,929,879.89
  5. Step 5: Solve for x
    x = 643,482,929,879.89/916,590.70
  6. Step 6: Final answer
    x = 702,039.56

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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.