Home / 559,387.08-771,962.58-304,738.20

Finding the Fourth Proportional to 559,387.08, 771,962.58 and 304,738.20

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Solution

The fourth proportional to 559,387.08, 771,962.58 and 304,738.20 is: 420,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,387.08 : 771,962.58 = 304,738.20 : x
  2. Step 2: Convert to fraction form
    559,387.08/771,962.58 = 304,738.20/x
  3. Step 3: Cross multiply
    559,387.08x = 771,962.58 × 304,738.20
  4. Step 4: Simplify right side
    559,387.08x = 235,246,487,096.56
  5. Step 5: Solve for x
    x = 235,246,487,096.56/559,387.08
  6. Step 6: Final answer
    x = 420,543.30

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Half scale
Find fourth proportional to 1,118,774.16, 1,543,925.16 and 609,476.40
Double scale
Find fourth proportional to 559,388.08, 771,963.96 and 304,739.20
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.