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Finding the Fourth Proportional to 710,490.96, 980,070.84 and 455,554.80

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Solution

The fourth proportional to 710,490.96, 980,070.84 and 455,554.80 is: 628,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,490.96 : 980,070.84 = 455,554.80 : x
  2. Step 2: Convert to fraction form
    710,490.96/980,070.84 = 455,554.80/x
  3. Step 3: Cross multiply
    710,490.96x = 980,070.84 × 455,554.80
  4. Step 4: Simplify right side
    710,490.96x = 446,475,975,502.03
  5. Step 5: Solve for x
    x = 446,475,975,502.03/710,490.96
  6. Step 6: Final answer
    x = 628,404.86

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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.