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Finding the Fourth Proportional to 561,920,603.40, 842,880,905.10 and 553,311,259.20

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Solution

The fourth proportional to 561,920,603.40, 842,880,905.10 and 553,311,259.20 is: 829,966,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,920,603.40 : 842,880,905.10 = 553,311,259.20 : x
  2. Step 2: Convert to fraction form
    561,920,603.40/842,880,905.10 = 553,311,259.20/x
  3. Step 3: Cross multiply
    561,920,603.40x = 842,880,905.10 × 553,311,259.20
  4. Step 4: Simplify right side
    561,920,603.40x = 466,375,494,956,516,736
  5. Step 5: Solve for x
    x = 466,375,494,956,516,736/561,920,603.40
  6. Step 6: Final answer
    x = 829,966,888.80

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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.