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Finding the Fourth Proportional to 555,384.69, 766,433.25 and 313,670.16

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Solution

The fourth proportional to 555,384.69, 766,433.25 and 313,670.16 is: 432,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,384.69 : 766,433.25 = 313,670.16 : x
  2. Step 2: Convert to fraction form
    555,384.69/766,433.25 = 313,670.16/x
  3. Step 3: Cross multiply
    555,384.69x = 766,433.25 × 313,670.16
  4. Step 4: Simplify right side
    555,384.69x = 240,407,240,156.82
  5. Step 5: Solve for x
    x = 240,407,240,156.82/555,384.69
  6. Step 6: Final answer
    x = 432,866.16

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Double scale
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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.