Home / 651,302.60-976,953.90-438,726.20

Finding the Fourth Proportional to 651,302.60, 976,953.90 and 438,726.20

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Solution

The fourth proportional to 651,302.60, 976,953.90 and 438,726.20 is: 658,089.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,302.60 : 976,953.90 = 438,726.20 : x
  2. Step 2: Convert to fraction form
    651,302.60/976,953.90 = 438,726.20/x
  3. Step 3: Cross multiply
    651,302.60x = 976,953.90 × 438,726.20
  4. Step 4: Simplify right side
    651,302.60x = 428,615,272,122.18
  5. Step 5: Solve for x
    x = 428,615,272,122.18/651,302.60
  6. Step 6: Final answer
    x = 658,089.30

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Half scale
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Double scale
Find fourth proportional to 651,303.60, 976,955.40 and 438,727.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.