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Finding the Fourth Proportional to 403,302.40, 604,953.60 and 385,587.70

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Solution

The fourth proportional to 403,302.40, 604,953.60 and 385,587.70 is: 578,381.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,302.40 : 604,953.60 = 385,587.70 : x
  2. Step 2: Convert to fraction form
    403,302.40/604,953.60 = 385,587.70/x
  3. Step 3: Cross multiply
    403,302.40x = 604,953.60 × 385,587.70
  4. Step 4: Simplify right side
    403,302.40x = 233,262,667,230.72
  5. Step 5: Solve for x
    x = 233,262,667,230.72/403,302.40
  6. Step 6: Final answer
    x = 578,381.55

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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.