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Finding the Fourth Proportional to 692,530.68, 955,693.26 and 390,752.76

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Solution

The fourth proportional to 692,530.68, 955,693.26 and 390,752.76 is: 539,239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,530.68 : 955,693.26 = 390,752.76 : x
  2. Step 2: Convert to fraction form
    692,530.68/955,693.26 = 390,752.76/x
  3. Step 3: Cross multiply
    692,530.68x = 955,693.26 × 390,752.76
  4. Step 4: Simplify right side
    692,530.68x = 373,439,779,058.40
  5. Step 5: Solve for x
    x = 373,439,779,058.40/692,530.68
  6. Step 6: Final answer
    x = 539,239.33

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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.