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Finding the Fourth Proportional to 666,703.59, 920,053.37 and 360,779.93

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Solution

The fourth proportional to 666,703.59, 920,053.37 and 360,779.93 is: 497,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,703.59 : 920,053.37 = 360,779.93 : x
  2. Step 2: Convert to fraction form
    666,703.59/920,053.37 = 360,779.93/x
  3. Step 3: Cross multiply
    666,703.59x = 920,053.37 × 360,779.93
  4. Step 4: Simplify right side
    666,703.59x = 331,936,792,725.00
  5. Step 5: Solve for x
    x = 331,936,792,725.00/666,703.59
  6. Step 6: Final answer
    x = 497,877.62

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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.