Home / 640,872,000.40-961,308,000.60-425,461,248.40

Finding the Fourth Proportional to 640,872,000.40, 961,308,000.60 and 425,461,248.40

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Solution

The fourth proportional to 640,872,000.40, 961,308,000.60 and 425,461,248.40 is: 638,191,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,872,000.40 : 961,308,000.60 = 425,461,248.40 : x
  2. Step 2: Convert to fraction form
    640,872,000.40/961,308,000.60 = 425,461,248.40/x
  3. Step 3: Cross multiply
    640,872,000.40x = 961,308,000.60 × 425,461,248.40
  4. Step 4: Simplify right side
    640,872,000.40x = 408,999,302,032,183,936
  5. Step 5: Solve for x
    x = 408,999,302,032,183,936/640,872,000.40
  6. Step 6: Final answer
    x = 638,191,872.60

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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.