Home / 443,173,428.72-611,655,274.55-257,642,061.21

Finding the Fourth Proportional to 443,173,428.72, 611,655,274.55 and 257,642,061.21

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Solution

The fourth proportional to 443,173,428.72, 611,655,274.55 and 257,642,061.21 is: 355,590,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,173,428.72 : 611,655,274.55 = 257,642,061.21 : x
  2. Step 2: Convert to fraction form
    443,173,428.72/611,655,274.55 = 257,642,061.21/x
  3. Step 3: Cross multiply
    443,173,428.72x = 611,655,274.55 × 257,642,061.21
  4. Step 4: Simplify right side
    443,173,428.72x = 157,588,125,685,674,560
  5. Step 5: Solve for x
    x = 157,588,125,685,674,560/443,173,428.72
  6. Step 6: Final answer
    x = 355,590,194.43

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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.