Home / 740,313.90-1,021,633.56-400,782.15

Finding the Fourth Proportional to 740,313.90, 1,021,633.56 and 400,782.15

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Solution

The fourth proportional to 740,313.90, 1,021,633.56 and 400,782.15 is: 553,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,313.90 : 1,021,633.56 = 400,782.15 : x
  2. Step 2: Convert to fraction form
    740,313.90/1,021,633.56 = 400,782.15/x
  3. Step 3: Cross multiply
    740,313.90x = 1,021,633.56 × 400,782.15
  4. Step 4: Simplify right side
    740,313.90x = 409,452,494,688.95
  5. Step 5: Solve for x
    x = 409,452,494,688.95/740,313.90
  6. Step 6: Final answer
    x = 553,079.57

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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.