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Finding the Fourth Proportional to 553,377.90, 830,066.85 and 402,912.30

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Solution

The fourth proportional to 553,377.90, 830,066.85 and 402,912.30 is: 604,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,377.90 : 830,066.85 = 402,912.30 : x
  2. Step 2: Convert to fraction form
    553,377.90/830,066.85 = 402,912.30/x
  3. Step 3: Cross multiply
    553,377.90x = 830,066.85 × 402,912.30
  4. Step 4: Simplify right side
    553,377.90x = 334,444,143,687.26
  5. Step 5: Solve for x
    x = 334,444,143,687.26/553,377.90
  6. Step 6: Final answer
    x = 604,368.45

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.