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Finding the Fourth Proportional to 530,705.61, 732,259.49 and 315,803.70

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Solution

The fourth proportional to 530,705.61, 732,259.49 and 315,803.70 is: 435,741.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,705.61 : 732,259.49 = 315,803.70 : x
  2. Step 2: Convert to fraction form
    530,705.61/732,259.49 = 315,803.70/x
  3. Step 3: Cross multiply
    530,705.61x = 732,259.49 × 315,803.70
  4. Step 4: Simplify right side
    530,705.61x = 231,250,254,723.10
  5. Step 5: Solve for x
    x = 231,250,254,723.10/530,705.61
  6. Step 6: Final answer
    x = 435,741.12

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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.