Home / 740,306.05-1,021,622.69-400,774.30

Finding the Fourth Proportional to 740,306.05, 1,021,622.69 and 400,774.30

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Solution

The fourth proportional to 740,306.05, 1,021,622.69 and 400,774.30 is: 553,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,306.05 : 1,021,622.69 = 400,774.30 : x
  2. Step 2: Convert to fraction form
    740,306.05/1,021,622.69 = 400,774.30/x
  3. Step 3: Cross multiply
    740,306.05x = 1,021,622.69 × 400,774.30
  4. Step 4: Simplify right side
    740,306.05x = 409,440,116,896.75
  5. Step 5: Solve for x
    x = 409,440,116,896.75/740,306.05
  6. Step 6: Final answer
    x = 553,068.72

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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.