Home / 676,746.68-933,848.30-390,211.40

Finding the Fourth Proportional to 676,746.68, 933,848.30 and 390,211.40

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Solution

The fourth proportional to 676,746.68, 933,848.30 and 390,211.40 is: 538,455.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,746.68 : 933,848.30 = 390,211.40 : x
  2. Step 2: Convert to fraction form
    676,746.68/933,848.30 = 390,211.40/x
  3. Step 3: Cross multiply
    676,746.68x = 933,848.30 × 390,211.40
  4. Step 4: Simplify right side
    676,746.68x = 364,398,255,840.77
  5. Step 5: Solve for x
    x = 364,398,255,840.77/676,746.68
  6. Step 6: Final answer
    x = 538,455.92

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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.