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Finding the Fourth Proportional to 528,767.10, 729,699.51 and 302,412.60

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Solution

The fourth proportional to 528,767.10, 729,699.51 and 302,412.60 is: 417,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,767.10 : 729,699.51 = 302,412.60 : x
  2. Step 2: Convert to fraction form
    528,767.10/729,699.51 = 302,412.60/x
  3. Step 3: Cross multiply
    528,767.10x = 729,699.51 × 302,412.60
  4. Step 4: Simplify right side
    528,767.10x = 220,670,326,037.83
  5. Step 5: Solve for x
    x = 220,670,326,037.83/528,767.10
  6. Step 6: Final answer
    x = 417,329.91

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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.