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Finding the Fourth Proportional to 716,622.79, 989,347.34 and 475,231.25

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Solution

The fourth proportional to 716,622.79, 989,347.34 and 475,231.25 is: 656,089.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,622.79 : 989,347.34 = 475,231.25 : x
  2. Step 2: Convert to fraction form
    716,622.79/989,347.34 = 475,231.25/x
  3. Step 3: Cross multiply
    716,622.79x = 989,347.34 × 475,231.25
  4. Step 4: Simplify right side
    716,622.79x = 470,168,769,313.72
  5. Step 5: Solve for x
    x = 470,168,769,313.72/716,622.79
  6. Step 6: Final answer
    x = 656,089.62

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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.