Home / 1,428,613.48-1,971,421.63-784,020.88

Finding the Fourth Proportional to 1,428,613.48, 1,971,421.63 and 784,020.88

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Solution

The fourth proportional to 1,428,613.48, 1,971,421.63 and 784,020.88 is: 1,081,913.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,613.48 : 1,971,421.63 = 784,020.88 : x
  2. Step 2: Convert to fraction form
    1,428,613.48/1,971,421.63 = 784,020.88/x
  3. Step 3: Cross multiply
    1,428,613.48x = 1,971,421.63 × 784,020.88
  4. Step 4: Simplify right side
    1,428,613.48x = 1,545,635,721,203.63
  5. Step 5: Solve for x
    x = 1,545,635,721,203.63/1,428,613.48
  6. Step 6: Final answer
    x = 1,081,913.16

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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.