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Finding the Fourth Proportional to 771,804.80, 1,157,318.40 and 456,358.40

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Solution

The fourth proportional to 771,804.80, 1,157,318.40 and 456,358.40 is: 684,307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,804.80 : 1,157,318.40 = 456,358.40 : x
  2. Step 2: Convert to fraction form
    771,804.80/1,157,318.40 = 456,358.40/x
  3. Step 3: Cross multiply
    771,804.80x = 1,157,318.40 × 456,358.40
  4. Step 4: Simplify right side
    771,804.80x = 528,151,973,314.56
  5. Step 5: Solve for x
    x = 528,151,973,314.56/771,804.80
  6. Step 6: Final answer
    x = 684,307.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.