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Finding the Fourth Proportional to 509,173.34, 702,681.45 and 282,818.84

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Solution

The fourth proportional to 509,173.34, 702,681.45 and 282,818.84 is: 390,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,173.34 : 702,681.45 = 282,818.84 : x
  2. Step 2: Convert to fraction form
    509,173.34/702,681.45 = 282,818.84/x
  3. Step 3: Cross multiply
    509,173.34x = 702,681.45 × 282,818.84
  4. Step 4: Simplify right side
    509,173.34x = 198,731,552,578.52
  5. Step 5: Solve for x
    x = 198,731,552,578.52/509,173.34
  6. Step 6: Final answer
    x = 390,302.35

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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.