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Finding the Fourth Proportional to 506,820.10, 699,300.12 and 302,840.50

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Solution

The fourth proportional to 506,820.10, 699,300.12 and 302,840.50 is: 417,853.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,820.10 : 699,300.12 = 302,840.50 : x
  2. Step 2: Convert to fraction form
    506,820.10/699,300.12 = 302,840.50/x
  3. Step 3: Cross multiply
    506,820.10x = 699,300.12 × 302,840.50
  4. Step 4: Simplify right side
    506,820.10x = 211,776,397,990.86
  5. Step 5: Solve for x
    x = 211,776,397,990.86/506,820.10
  6. Step 6: Final answer
    x = 417,853.19

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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.