Home / 771,436.51-1,064,334.74-499,712.69

Finding the Fourth Proportional to 771,436.51, 1,064,334.74 and 499,712.69

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Solution

The fourth proportional to 771,436.51, 1,064,334.74 and 499,712.69 is: 689,443.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,436.51 : 1,064,334.74 = 499,712.69 : x
  2. Step 2: Convert to fraction form
    771,436.51/1,064,334.74 = 499,712.69/x
  3. Step 3: Cross multiply
    771,436.51x = 1,064,334.74 × 499,712.69
  4. Step 4: Simplify right side
    771,436.51x = 531,861,576,148.12
  5. Step 5: Solve for x
    x = 531,861,576,148.12/771,436.51
  6. Step 6: Final answer
    x = 689,443.10

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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.