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Finding the Fourth Proportional to 756,656.80, 1,134,466.80 and 357,488.80

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Solution

The fourth proportional to 756,656.80, 1,134,466.80 and 357,488.80 is: 535,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,656.80 : 1,134,466.80 = 357,488.80 : x
  2. Step 2: Convert to fraction form
    756,656.80/1,134,466.80 = 357,488.80/x
  3. Step 3: Cross multiply
    756,656.80x = 1,134,466.80 × 357,488.80
  4. Step 4: Simplify right side
    756,656.80x = 405,559,174,971.84
  5. Step 5: Solve for x
    x = 405,559,174,971.84/756,656.80
  6. Step 6: Final answer
    x = 535,988.28

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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.