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Finding the Fourth Proportional to 660,045.51, 910,862.82 and 358,239.51

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Solution

The fourth proportional to 660,045.51, 910,862.82 and 358,239.51 is: 494,370.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,045.51 : 910,862.82 = 358,239.51 : x
  2. Step 2: Convert to fraction form
    660,045.51/910,862.82 = 358,239.51/x
  3. Step 3: Cross multiply
    660,045.51x = 910,862.82 × 358,239.51
  4. Step 4: Simplify right side
    660,045.51x = 326,307,050,314.02
  5. Step 5: Solve for x
    x = 326,307,050,314.02/660,045.51
  6. Step 6: Final answer
    x = 494,370.53

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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.