Home / 521,520,768,205.20-782,281,152,307.80-427,300,105,280.40

Finding the Fourth Proportional to 521,520,768,205.20, 782,281,152,307.80 and 427,300,105,280.40

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Solution

The fourth proportional to 521,520,768,205.20, 782,281,152,307.80 and 427,300,105,280.40 is: 640,950,157,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,768,205.20 : 782,281,152,307.80 = 427,300,105,280.40 : x
  2. Step 2: Convert to fraction form
    521,520,768,205.20/782,281,152,307.80 = 427,300,105,280.40/x
  3. Step 3: Cross multiply
    521,520,768,205.20x = 782,281,152,307.80 × 427,300,105,280.40
  4. Step 4: Simplify right side
    521,520,768,205.20x = 334,268,818,739,995,623,817,216
  5. Step 5: Solve for x
    x = 334,268,818,739,995,623,817,216/521,520,768,205.20
  6. Step 6: Final answer
    x = 640,950,157,920.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.