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Finding the Fourth Proportional to 656,881.30, 906,523.08 and 415,075.64

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Solution

The fourth proportional to 656,881.30, 906,523.08 and 415,075.64 is: 572,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,881.30 : 906,523.08 = 415,075.64 : x
  2. Step 2: Convert to fraction form
    656,881.30/906,523.08 = 415,075.64/x
  3. Step 3: Cross multiply
    656,881.30x = 906,523.08 × 415,075.64
  4. Step 4: Simplify right side
    656,881.30x = 376,275,647,605.77
  5. Step 5: Solve for x
    x = 376,275,647,605.77/656,881.30
  6. Step 6: Final answer
    x = 572,821.38

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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.