Home / 563,827.64-778,044.14-309,173.40

Finding the Fourth Proportional to 563,827.64, 778,044.14 and 309,173.40

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Solution

The fourth proportional to 563,827.64, 778,044.14 and 309,173.40 is: 426,638.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,827.64 : 778,044.14 = 309,173.40 : x
  2. Step 2: Convert to fraction form
    563,827.64/778,044.14 = 309,173.40/x
  3. Step 3: Cross multiply
    563,827.64x = 778,044.14 × 309,173.40
  4. Step 4: Simplify right side
    563,827.64x = 240,550,552,113.88
  5. Step 5: Solve for x
    x = 240,550,552,113.88/563,827.64
  6. Step 6: Final answer
    x = 426,638.45

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Double scale
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Similar ratio
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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.