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Finding the Fourth Proportional to 406,868.40, 610,302.60 and 280,897.20

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Solution

The fourth proportional to 406,868.40, 610,302.60 and 280,897.20 is: 421,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,868.40 : 610,302.60 = 280,897.20 : x
  2. Step 2: Convert to fraction form
    406,868.40/610,302.60 = 280,897.20/x
  3. Step 3: Cross multiply
    406,868.40x = 610,302.60 × 280,897.20
  4. Step 4: Simplify right side
    406,868.40x = 171,432,291,492.72
  5. Step 5: Solve for x
    x = 171,432,291,492.72/406,868.40
  6. Step 6: Final answer
    x = 421,345.80

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1.5x scale

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.