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Finding the Fourth Proportional to 660,070.58, 910,899.15 and 358,264.58

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Solution

The fourth proportional to 660,070.58, 910,899.15 and 358,264.58 is: 494,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,070.58 : 910,899.15 = 358,264.58 : x
  2. Step 2: Convert to fraction form
    660,070.58/910,899.15 = 358,264.58/x
  3. Step 3: Cross multiply
    660,070.58x = 910,899.15 × 358,264.58
  4. Step 4: Simplify right side
    660,070.58x = 326,342,901,397.11
  5. Step 5: Solve for x
    x = 326,342,901,397.11/660,070.58
  6. Step 6: Final answer
    x = 494,406.07

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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.