Home / 740,300.49-1,021,617.99-400,768.74

Finding the Fourth Proportional to 740,300.49, 1,021,617.99 and 400,768.74

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Solution

The fourth proportional to 740,300.49, 1,021,617.99 and 400,768.74 is: 553,062.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,300.49 : 1,021,617.99 = 400,768.74 : x
  2. Step 2: Convert to fraction form
    740,300.49/1,021,617.99 = 400,768.74/x
  3. Step 3: Cross multiply
    740,300.49x = 1,021,617.99 × 400,768.74
  4. Step 4: Simplify right side
    740,300.49x = 409,432,554,613.63
  5. Step 5: Solve for x
    x = 409,432,554,613.63/740,300.49
  6. Step 6: Final answer
    x = 553,062.66

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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.