Home / 740,515.18-1,021,909.18-400,983.42

Finding the Fourth Proportional to 740,515.18, 1,021,909.18 and 400,983.42

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Solution

The fourth proportional to 740,515.18, 1,021,909.18 and 400,983.42 is: 553,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,515.18 : 1,021,909.18 = 400,983.42 : x
  2. Step 2: Convert to fraction form
    740,515.18/1,021,909.18 = 400,983.42/x
  3. Step 3: Cross multiply
    740,515.18x = 1,021,909.18 × 400,983.42
  4. Step 4: Simplify right side
    740,515.18x = 409,768,637,925.80
  5. Step 5: Solve for x
    x = 409,768,637,925.80/740,515.18
  6. Step 6: Final answer
    x = 553,356.16

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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.