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Finding the Fourth Proportional to 615,280.48, 849,085.47 and 343,345.49

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Solution

The fourth proportional to 615,280.48, 849,085.47 and 343,345.49 is: 473,815.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,280.48 : 849,085.47 = 343,345.49 : x
  2. Step 2: Convert to fraction form
    615,280.48/849,085.47 = 343,345.49/x
  3. Step 3: Cross multiply
    615,280.48x = 849,085.47 × 343,345.49
  4. Step 4: Simplify right side
    615,280.48x = 291,529,666,749.03
  5. Step 5: Solve for x
    x = 291,529,666,749.03/615,280.48
  6. Step 6: Final answer
    x = 473,815.89

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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.