Home / 623,038,438.23-860,057,781.48-388,205,124.72

Finding the Fourth Proportional to 623,038,438.23, 860,057,781.48 and 388,205,124.72

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Solution

The fourth proportional to 623,038,438.23, 860,057,781.48 and 388,205,124.72 is: 535,888,025.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,038,438.23 : 860,057,781.48 = 388,205,124.72 : x
  2. Step 2: Convert to fraction form
    623,038,438.23/860,057,781.48 = 388,205,124.72/x
  3. Step 3: Cross multiply
    623,038,438.23x = 860,057,781.48 × 388,205,124.72
  4. Step 4: Simplify right side
    623,038,438.23x = 333,878,838,325,849,920
  5. Step 5: Solve for x
    x = 333,878,838,325,849,920/623,038,438.23
  6. Step 6: Final answer
    x = 535,888,025.26

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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.