Home / 563,745.33-777,962.75-309,096.09

Finding the Fourth Proportional to 563,745.33, 777,962.75 and 309,096.09

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Solution

The fourth proportional to 563,745.33, 777,962.75 and 309,096.09 is: 426,549.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,745.33 : 777,962.75 = 309,096.09 : x
  2. Step 2: Convert to fraction form
    563,745.33/777,962.75 = 309,096.09/x
  3. Step 3: Cross multiply
    563,745.33x = 777,962.75 × 309,096.09
  4. Step 4: Simplify right side
    563,745.33x = 240,465,242,645.17
  5. Step 5: Solve for x
    x = 240,465,242,645.17/563,745.33
  6. Step 6: Final answer
    x = 426,549.42

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Half scale
Find fourth proportional to 1,127,490.66, 1,555,925.49 and 618,192.18
Double scale
Find fourth proportional to 563,746.33, 777,964.12 and 309,097.09
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.