Home / 740,280.40-1,021,585.80-400,748.56

Finding the Fourth Proportional to 740,280.40, 1,021,585.80 and 400,748.56

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Solution

The fourth proportional to 740,280.40, 1,021,585.80 and 400,748.56 is: 553,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,280.40 : 1,021,585.80 = 400,748.56 : x
  2. Step 2: Convert to fraction form
    740,280.40/1,021,585.80 = 400,748.56/x
  3. Step 3: Cross multiply
    740,280.40x = 1,021,585.80 × 400,748.56
  4. Step 4: Simplify right side
    740,280.40x = 409,399,038,266.45
  5. Step 5: Solve for x
    x = 409,399,038,266.45/740,280.40
  6. Step 6: Final answer
    x = 553,032.39

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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.