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Finding the Fourth Proportional to 641,342,916.60, 962,014,374.90 and 549,509,911.80

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Solution

The fourth proportional to 641,342,916.60, 962,014,374.90 and 549,509,911.80 is: 824,264,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,342,916.60 : 962,014,374.90 = 549,509,911.80 : x
  2. Step 2: Convert to fraction form
    641,342,916.60/962,014,374.90 = 549,509,911.80/x
  3. Step 3: Cross multiply
    641,342,916.60x = 962,014,374.90 × 549,509,911.80
  4. Step 4: Simplify right side
    641,342,916.60x = 528,636,434,301,631,104
  5. Step 5: Solve for x
    x = 528,636,434,301,631,104/641,342,916.60
  6. Step 6: Final answer
    x = 824,264,867.70

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Double scale
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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.