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Finding the Fourth Proportional to 559,817.01, 772,547.49 and 305,168.40

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Solution

The fourth proportional to 559,817.01, 772,547.49 and 305,168.40 is: 421,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,817.01 : 772,547.49 = 305,168.40 : x
  2. Step 2: Convert to fraction form
    559,817.01/772,547.49 = 305,168.40/x
  3. Step 3: Cross multiply
    559,817.01x = 772,547.49 × 305,168.40
  4. Step 4: Simplify right side
    559,817.01x = 235,757,081,447.32
  5. Step 5: Solve for x
    x = 235,757,081,447.32/559,817.01
  6. Step 6: Final answer
    x = 421,132.40

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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.