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Finding the Fourth Proportional to 528,457.46, 729,460.40 and 313,597.49

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Solution

The fourth proportional to 528,457.46, 729,460.40 and 313,597.49 is: 432,876.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,457.46 : 729,460.40 = 313,597.49 : x
  2. Step 2: Convert to fraction form
    528,457.46/729,460.40 = 313,597.49/x
  3. Step 3: Cross multiply
    528,457.46x = 729,460.40 × 313,597.49
  4. Step 4: Simplify right side
    528,457.46x = 228,756,945,279.11
  5. Step 5: Solve for x
    x = 228,756,945,279.11/528,457.46
  6. Step 6: Final answer
    x = 432,876.75

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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.