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Finding the Fourth Proportional to 559,210.51, 771,780 and 317,570.73

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Solution

The fourth proportional to 559,210.51, 771,780 and 317,570.73 is: 438,287.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,210.51 : 771,780 = 317,570.73 : x
  2. Step 2: Convert to fraction form
    559,210.51/771,780 = 317,570.73/x
  3. Step 3: Cross multiply
    559,210.51x = 771,780 × 317,570.73
  4. Step 4: Simplify right side
    559,210.51x = 245,094,737,999.40
  5. Step 5: Solve for x
    x = 245,094,737,999.40/559,210.51
  6. Step 6: Final answer
    x = 438,287.07

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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.