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Finding the Fourth Proportional to 556,588.60, 767,798.10 and 395,508.76

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Solution

The fourth proportional to 556,588.60, 767,798.10 and 395,508.76 is: 545,593.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,588.60 : 767,798.10 = 395,508.76 : x
  2. Step 2: Convert to fraction form
    556,588.60/767,798.10 = 395,508.76/x
  3. Step 3: Cross multiply
    556,588.60x = 767,798.10 × 395,508.76
  4. Step 4: Simplify right side
    556,588.60x = 303,670,874,461.36
  5. Step 5: Solve for x
    x = 303,670,874,461.36/556,588.60
  6. Step 6: Final answer
    x = 545,593.05

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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.