Home / 740,306.40-1,021,621.56-400,774.56

Finding the Fourth Proportional to 740,306.40, 1,021,621.56 and 400,774.56

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Solution

The fourth proportional to 740,306.40, 1,021,621.56 and 400,774.56 is: 553,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,306.40 : 1,021,621.56 = 400,774.56 : x
  2. Step 2: Convert to fraction form
    740,306.40/1,021,621.56 = 400,774.56/x
  3. Step 3: Cross multiply
    740,306.40x = 1,021,621.56 × 400,774.56
  4. Step 4: Simplify right side
    740,306.40x = 409,439,931,195.51
  5. Step 5: Solve for x
    x = 409,439,931,195.51/740,306.40
  6. Step 6: Final answer
    x = 553,068.20

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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.