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Finding the Fourth Proportional to 478,688.06, 660,590.45 and 260,899.16

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Solution

The fourth proportional to 478,688.06, 660,590.45 and 260,899.16 is: 360,041.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,688.06 : 660,590.45 = 260,899.16 : x
  2. Step 2: Convert to fraction form
    478,688.06/660,590.45 = 260,899.16/x
  3. Step 3: Cross multiply
    478,688.06x = 660,590.45 × 260,899.16
  4. Step 4: Simplify right side
    478,688.06x = 172,347,495,812.75
  5. Step 5: Solve for x
    x = 172,347,495,812.75/478,688.06
  6. Step 6: Final answer
    x = 360,041.35

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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.